Method for displaying time in mobile terminal

Abstract

A method for providing precision current times of cities by using information stored in a time table for a mobile terminal is disclosed. In one embodiment, the method includes a) storing information about time differences between predetermined cities and a Greenwich Mean Time (GMT) in the storing unit of the mobile terminal, b) receiving time information from a base station when the mobile terminal is initialized, c) receiving a request of displaying a current time of a target city from a user, d) computing the current time of the target city based on the time information from the base station and the time table stored in the storing unit and e) displaying the computed current time of the target city on the displaying unit.

1 . A method for displaying a current time of a target city in a mobile terminal having a storing unit and a displaying unit, the method comprising: 
 a) storing information about time differences between predetermined cities and a Greenwich Mean Time (GMT) and adaptation of a summer time system of the predetermined cities into a time table in the storing unit of the mobile terminal;    b) receiving time information from a base station when the mobile terminal is initialized;    c) receiving a request of displaying a current time of a target city from a user;    d) computing the current time of the target city based on the time information from the base station and the time table stored in the storing unit; and    e) displaying the computed current time of the target city on the displaying unit.    
     
     
         2 . The method of  claim 1 , wherein the time information includes a current time of a current location where the mobile terminal is located, a first time difference value representing a time difference between the current location and the GMT and a first adaptation value representing an adaptation of a summer time system.  
     
     
         3 . The method of  claim 1 , wherein the time table includes second time difference values representing time differences between predetermined cities and the GMT, second adaptation values representing adaptation of a summer time system of the predetermined cities, starting dates and ending dates representing dates start and end the summer time of the predetermined cities.  
     
     
         4 . The method of  claim 1 , wherein the computing includes: 
 d-1) computing a current GMT based on the current time of the current location and a first time difference from the time information;    d-2) extracting a second time difference of the target city and a second adaptation value of the target city from the time table; and    d-3) computing the current time of the target city by using the computed current GMT, the extracted second time difference and the extracted adaptation value.    
     
     
         5 . The method of  claim 4 , wherein the computing (d-3) includes: 
 d-3-I) computing a standard time of the target city by adding the current GMT and the extracted second time difference;    d-3-II) determining whether the target city adapts the summer time system based on the extracted second adaptation value;    d-3-III) computing the current time of the target city by adding one hour to the standard time, if the target city adapts the summer time system; and    d-3-IV) determining the standard time as the current time of the target city, if the target city does not adapt the summer time system.    
     
     
         6 . The method of  claim 1 , wherein the computing includes: 
 d-a) computing a first standard time of a current location by using the current time of the current location, a first time difference value and a first adaptation value from the time information;    d-b) extracting a second time difference value of the target city and a second adaptation value of the target city from the time table;    d-c) computing a target time difference between the first time difference and the second time difference; and    d-d) computing a current time of the target city by using the first standard time of the current location, the target time difference and the second adaptation value of the target city.    
     
     
         7 . The method of  claim 6 , wherein the computing (d-a) includes: 
 d-a-1) determining whether the current location adapts a summer time system based on the first adaptation value included in the time information from the base station;    d-a-2) calculating the standard time of the current location by subtracting one hour from the current time included in the time information in a case that the current location adapts the summer time system; and    d-a-3) selecting the current time as the standard time of the current location in a case that the current location does not adapts the summer time system.    
     
     
         8 . The method of  claim 6 , wherein the computing (d-d) includes: 
 d-d-1) computing a second standard time of the target city by adding the first standard time to the target time difference;    d-d-2) determining whether the target city adapts the summer time system based on the second adaptation value from the time table;    d-d-3) computing the current time of the target city by adding one hour to the second standard time if the target city adapts the summer time system; and    d-d-4) determining the second standard time as the current time of the target city if the target city does not adapt the summer time system.    
     
     
         9 . The method of  claim 1 , wherein the time table stores the time differences between the current location and GMT on 30 minutes basis.  
     
     
         10 . A method for displaying a current time of a target city in a mobile terminal having a storing unit, a CPU and a displaying unit, the method comprising: 
 a) storing information about time differences between predetermined cities and a Greenwich Mean Time (GMT) into a time table in the storing unit of the mobile terminal;    b) receiving time information from a base station when the mobile terminal is initialized;    c) receiving a request of displaying a current time of a target city;    d) computing the current time of the target city based on the time information from the base station and the time table stored in the storing unit; and    e) displaying the computed current time of a target city.    
     
     
         11 . The method of  claim 10 , wherein the time information includes a current time of a current location where the mobile terminal is located and a first time difference value representing a time difference between the current location and the GMT.  
     
     
         12 . The method of  claim 11 , wherein the computing includes: 
 d-1) extracting a second time difference value of the target city from the time table;    d-2) calculating a target time difference by determining difference between the first time difference value and the second time difference value; and    d-3) computing the current time of the target city by adding the target time difference and the current time of the current location from the time information.    
     
     
         13 . A mobile terminal for displaying a precision current time of a target city, the mobile terminal comprising: 
 means for calculating a current time of a target city based on time information from a base station and information stored in a time table; and    means for storing the time table, wherein the time table includes time differences between predetermined cities and a Greenwich Mean Time (GMT), adaptation values, and summer time period of the predetermined cities.    
     
     
         14 . A method of providing a current time of a target city in a mobile terminal, the method comprising: 
 storing information about time differences between predetermined cities and a base time on the mobile terminal;    receiving time information from a base station when the mobile terminal is initialized;    computing the current time of the target city based on the time information received from the base station and the stored information; and    providing, to a user, the computed current time of a target city.    
     
     
         15 . An apparatus for providing a current time of a target city in a mobile terminal, the apparatus comprising: 
 means for storing information about time differences between predetermined cities and a base time on the mobile terminal;    means for receiving time information from a base station when the mobile terminal is initialized;    means for computing the current time of the target city based on the time information received from the base station and the stored information; and    means for providing, to a user, the computed current time of a target city.